Respuesta :

Answer:

x = - 1

Step-by-step explanation:

given

11 = 18 + 3x + 4x ← combine x terms

11 = 18 + 7x ( subtract 18 from both sides )

- 7 = 7x ( divide both sides by 7 )

- 1 = x ⇒ x = - 1

ada2810
11-18=3x+4x
(-7)=7x
X= 7:(-7)
X= (-1)

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